Nut-lock.



M. J. WYGONIK.

NUT LOCK.

APPLIOATIOH FILED n12.29, 1909.

Patented Aug. 3, 1909.

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MARTIN J. WYGONIK, or NATRONA, PENNSYLVANIA.

NUT-LOCK.

Specification of Letters Patent.

Patented Aug. 3, 1909.

Application filed April 29, 1909. Serial No. 492,927.

To all whom it may concern:

Be it known that l, MARTIN J. W'YGONIK, a citizen of the United Statesof America, residing at Natrona, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inNut-Locks, of which the following is aspecification, reference being hadtherein to the accompanying drawing.

This invention relates to nut locks, and the objects of the inventionare, first to provide positive and reliable means for locking a nut upona bolt, whereby vibrations of the bolt will not loosen or dislodge thenut; second, to provide a nut lock that can be advantageously used inconnection with rail joints, rolling stock, bridges and structuressubject to vibrations; third, to provide a simple and durable nut lockthat can be easily and quickly placed in position by unskilled labor;and fourth, to provide a nut lock that will not injure or mar a bolt andnut, thus permitting of a bolt and nut being again used after the lockis manually released.

I attain the above objects by a nut locking device that will behereinafter described in detail and then specifically pointed out in theappended claim.

Referring to the drawing forming part of this application, Figure 1 is alongitudinal sectional view of a nut lock constructed in accordance withmy invention, Fig. 2 is a front elevation of the same, Fig. 3 is a rearelevation of a nut, Fig. l is an elevation of a locking pin.

In the accompanying drawings, 1 designates a piece of material providedwith alining openings 2 through which extends the bolt 3. The threadedend of this bolt is provided with two longitudinal grooves a and lintersecting the threads 5 of the bolt, said grooves having the innerends thereof beveled, as at 6, toward the periphery of the bolt Thegroove 4 is disposed approximately at an angle of one hundredthirty-five degrees relative to the groove 4 and the longitudinal axisof the bolt 3, and the object of arranging the grooves in this mannerwill hereinafter appear.

7 designates a nut having the bore thereof provided with a plurality oflongitudinal equally spaced grooves 8, these grooves intersecting thethreads of the nut. The rear face of the nut 7 is provided with aplurality of radially disposed grooves 9, the inner ends of said groovesterminating at the rear ends of l the grooves 8, while the outer ends ofthe I grooves 9 terminate at the sides of the nut 7. 10 designates a pinmade of malleable metal, said pin being rectangular in cross sectionwith the cross sectional area thereof corresponding to the combinedcross sectional area of either the groove 4 or 4* and one of the grooves8, when two of these grooves register. Gne end of the pin 10 is beveled,as at 11, for a purpose that will hereinafter appear.

After the nut 7 has been screwed upon, the bolt 3, and tightenedthereon, so that one of the grooves 8 of the nut registers with eitherthe groove 4 or 4 of the bolt, the pin 10 is driven into the registeringgrooves. As the beveled end 11 of the pin impinges the beveled end 6 ofthe groove 4, the beveled end of the pin is deflected into one of thegrooves 9, said pin becoming clenched therein, whereby it cannot bedislodged by a jarring movement imparted to the bolt 3. The outer end ofthe pin 10 is adapted to be bent downwardly, as shown in Fig. 1 of thedrawings, thereby locking the nut 7 relative to the bolt 3.

The location of the grooves 4 and 4 in the bolt 3 permits of the nutbeing thoroughly tightened upon the bolt, since one of the grooves 41 or4" can be readily moved to register with one of the grooves 8 and permitof the pin 10 being driven into the registering grooves.

While in the drawings there is illustrated the preferred embodiment ofmy invention, 1 would have it understood that the structural detailsthereof can be varied or changed vention.

Having now described my invention, what I claim as new, is

In a nut lock, the combination with pieces of material, of a boltextending through said pieces of material, said bolt having longitudinalgrooves formed in the threaded end thereof with the inner ends of saidgrooves beveled toward the periphery of said bolt and said groovesdisposed at an angle approximately one hundred thirty-five degreesrelative to each other and to the longitudinal axis of said bolt, a nutadapted to screw upon said bolt, said nut having the threaded borethereof provided with a plurality of equally spaced longitudinalgrooves, one of said grooves being adapted to register with one of thegrooves of said bolt, the rear face of said nut having radially disposedgrooves formed without departing from the spirit of the intherein withthe inner ends of said grooves to be bent to engage said nut,substantially l0 communicating With the longitudinal grooves asdescribed.

of said nut and the outer ends of said grooves In testimony whereof Iaflix my signature terifiiinlaiting at lthe sildesbofdsaid nut, and a Iin the presence of two Witnesses.

ma ea e in ac aptec to e riven into regis- T 7 tering gro ves of saidbolt and nut, said pin I MARTIN XGON having the end thereof beveled tobe del Witnesses:

flected by the beveled end of the bolt grooves, O. H. RABsIAG,

While the opposite end of said pin is adapted A. J. TRIGG

